How does the SMTP protocol work?

Simple Mail Transfer Protocol (SMTP) is based on end-to-end message delivery. An Simple Mail Transfer Protocol (SMTP) client contacts the destination host’s Simple Mail Transfer Protocol (SMTP) server on well-known port 25, to deliver the mail. The client then waits for the server to send a 220 READY FOR MAIL message.

How does SMTP flow?

SMTP Email flow This is like putting a letter into a postbox or post office for delivery. The smtp server then looks up the correct server to deliver the email to based on the email domain and sends the email on to the next server, again using the SMTP protocol.

What is SMTP in simple words?

The Simple Mail Transfer Protocol (SMTP) is an internet standard communication protocol for electronic mail transmission. User-level email clients typically use SMTP only for sending messages to a mail server for relaying, and typically submit outgoing email to the mail server on port 587 or 465 per RFC 8314.

How does FTP works explain?

If you send files using FTP, files are either uploaded or downloaded to the FTP server. When you’re uploading files, the files are transferred from a personal computer to the server. When you’re downloaded files, the files are transferred from the server to your personal computer.

Why does SMTP use TCP?

If you lose several packets in the middle of the message the recipient might not even receive the message and if they do they might be missing key information. This makes TCP more appropriate because it ensures that every packet is delivered. UDP is NOT a reliable ordered data stream channel.

Does SMTP use DNS?

The Domain Name System (DNS) is a directory used by SMTP to convert a name, such as renovations.com, to a list of servers that can receive connections for that name and to find the IP address of a specific server.

How does SMTP handle BCC?

Bcc stands for the blind carbon copy. It’s like an additional copy. Email addresses put in the Bcc field are invisible to all other recipients. This way, the one who is Bcc’ed will get a message, will see other direct or copied recipients but will remain unrevealed.